Saint John, Missouri | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Mostly Clear
    63°
    Saturday 5/18
    Forecast night icon
    63°
    Mostly Clear
    Hourly
    Night Details
    Mostly clear. Patchy fog. Lows in the lower 60s. Southwest winds around 5 mph early becoming light and variable.
  • Forecast day icon
    Sunday
    Sunny
    87°
    Forecast night icon
    Night
    Partly Cloudy
    68°
    Sunday 5/19
    Day
    87°
    Sunny
    Forecast day icon
    Night
    68°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Patchy fog in the morning. Sunny hot with highs in the upper 80s. South winds 5 to 10 mph.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph.
  • Forecast day icon
    Monday
    30% Chance of Storms
    86°
    Forecast night icon
    Night
    Partly Cloudy
    69°
    Monday 5/20
    Day
    86°
    30% Chance of Storms
    Forecast day icon
    Night
    69°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a slight chance of thunderstorms. A chance of showers mainly in the morning. Hot with highs in the upper 80s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 30 percent.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.
  • Forecast day icon
    Tuesday
    30% Chance of Storms
    88°
    Forecast night icon
    Night
    80% Chance of Storms
    65°
    Tuesday 5/21
    Day
    88°
    30% Chance of Storms
    Forecast day icon
    Night
    65°
    80% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Hot with highs around 90. Chance of rain 30 percent.
    Night Details
    Showers with thunderstorms likely in the evening then showers likely with a chance of thunderstorms after midnight. Lows in the lower 60s. Chance of rain 80 percent.
  • Forecast day icon
    Wednesday
    50% Chance of Storms
    74°
    Forecast night icon
    Night
    50% Chance of Storms
    56°
    Wednesday 5/22
    Day
    74°
    50% Chance of Storms
    Forecast day icon
    Night
    56°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a chance of showers and thunderstorms. Not as warm with highs in the upper 70s. Chance of rain 50 percent.
    Night Details
    Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening then mostly clear with a slight chance of showers after midnight. Lows in the mid 50s. Chance of rain 50 percent.
  • Forecast day icon
    Thursday
    30% Chance of Storms
    79°
    Forecast night icon
    Night
    50% Chance of Storms
    62°
    Thursday 5/23
    Day
    79°
    30% Chance of Storms
    Forecast day icon
    Night
    62°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Sunny. A slight chance of showers in the morning then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 50 percent.
  • Forecast day icon
    Friday
    50% Chance of Storms
    80°
    Forecast night icon
    Night
    50% Chance of Storms
    66°
    Friday 5/24
    Day
    80°
    50% Chance of Storms
    Forecast day icon
    Night
    66°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. A chance of showers and thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 50 percent.
    Night Details
    Partly cloudy. A chance of showers and thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 50 percent.
  • Forecast day icon
    Saturday
    40% Chance of Storms
    84°
    Forecast night icon
    Night
    70% Chance of Rain
    65°
    Saturday 5/25
    Day
    84°
    40% Chance of Storms
    Forecast day icon
    Night
    65°
    70% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. A slight chance of showers and thunderstorms in the morning then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.
    Night Details
    Mostly clear with a 70% chance for rain and thunderstorms. Low temperature around 65F. Dew point will be around 65F with an average humidity of 82%. Winds will be 2 mph from the S.
  • Forecast day icon
    Sunday
    60% Chance of Storms
    80°
    Forecast night icon
    Night
    60% Chance of Storms
    62°
    Sunday 5/26
    Day
    80°
    60% Chance of Storms
    Forecast day icon
    Night
    62°
    60% Chance of Storms
    Forecast night icon
    Day Details
    Mostly cloudy with a 85% chance for rain and thunderstorms. High temperature around 80F. Dew point will be around 65F with an average humidity of 74%. Winds will be 3 mph from the S.
    Night Details
    Clear with a 60% chance for rain and thunderstorms. Low temperature around 62F. Dew point will be around 63F with an average humidity of 79%. Winds will be 1 mph from the N.
  • Forecast day icon
    Monday
    50% Chance of Rain
    80°
    Forecast night icon
    Night
    50% Chance of Rain
    62°
    Monday 5/27
    Day
    80°
    50% Chance of Rain
    Forecast day icon
    Night
    62°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a chance of rain. Chance of precipitation 45%. High temperature around 80F. Dew point will be around 62F with an average humidity of 70%. Winds will be 2 mph from the SE.
    Night Details
    Mostly clear with a chance of rain. Chance of precipitation 50%. Low temperature around 62F. Dew point will be around 63F with an average humidity of 80%. Winds will be 1 mph from the E.